| dc.description.abstract | Objectives To investigate the association between perceived self-efficacy and physical activity (PA) level and physical fitness in patients with mild to moderate knee OA.
Methods This is a secondary analysis using baseline data from an ongoing randomized controlled trial (RCT) (n=168). Men and women 35-70 years of age with mild to moderate knee OA were included. Eligible candidates were excluded if they did regularly strength training or cycling 2-3 days a week, BMI >35, planned surgery the next 6 months, or serious diseases. PA level was measured using a self-report questionnaire. Perceived self-efficacy was assessed using the Norwegian version of the Arthritis self-efficacy scale and physical fitness was measured with a maximal oxygen consumption (VO2max) test. Multiple logistic and multiple linear regression analyses calculating odds ratio (OR) or beta value (B) and 95% confidence intervals (CI) were applied as appropriate including adjustment for known covariates (age, sex, BMI, education level, pain and known heart disease).
Results The association between PA level and self-efficacy for pain showed an OR (95% CI) of 1.06 (0.74, 1.53), and an OR of 1.06 (95% CI 0.61, 1.70) for self-efficacy for other symptoms. There was a statistically significant association between physical fitness and self-efficacy for pain (Beta value of 0.86 ((95%CI 0.18 – 1.54, p=0.013), and for self-efficacy for other symptoms (Beta value of 0.93 (95% CI 0.01 – 1.77, P=0.049)).
Conclusions: This study found no association between perceived self-efficacy and PA level in cross-sectional data of patients with mild to moderate knee OA, but a positive association was found between perceived self-efficacy for pain and other symptoms and physical fitness.
Clinical trial identifier: NCT01682980
Affiliations:
Department of Physiotherapy, Oslo Metropolitan University, Oslo, Norway
Division of Orthopedic Surgery, Oslo University Hospital | en_US |
